Since we learn languages best by speaking them, a decisive factor for success inherent in the inlingua method is that only the target language is spoken in the classroom.

The inlingua method is based on decades of practical experience. The method continues to be enhanced and perfected through close adaptation to ongoing linguistic and social developments. Language trainers are trained in the universal inlingua methodology. They design their lessons according to standardized training techniques and specially developed training materials, based on internationally recognized level systems. Vivid examples and practical application of the language take precedence over bland theoretical precepts. The students' progress is assessed at regular intervals to make sure that the lessons are carefully tailored to their individual needs.